Simulating Sensor And Electronics Temperature; Calibrating The Sensor - Siemens SITRANS P DS III Operating Instructions Manual

The behavior of the measured value (primary variable), the secondary variables 1, 2, and 3,
and of the output, can be observed in SIMATIC PDM.
To return to normal operation afterwards, you must switch off the simulation.
7.10.5

Simulating sensor and electronics temperature

By simulating the sensor and electronics temperature you can, for instance, check the
influence of excessive temperature on the measurement results:
Procedure
To simulate the sensor and electronics temperature, make the following settings:
1. Select the simulation of sensor or of the electronics temperature.
2. Set the simulation mode and the parameters:
– Simulation mode "Fixed" and parameter pressure value
– Simulation mode "Ramp" and ramp parameters
3. Transmit the settings from the program into the pressure transmitter.
The behavior of the measured value (primary variable), the secondary variables 1, 2, and 3,
and of the output, can be observed in SIMATIC PDM.
To return to normal operation afterwards, you must switch off the simulation.
7.11

Calibrating the sensor

Sensor calibration enables you to calibrate the pressure transmitter. Analogous to modes 19
and 20 for local operation, you can change the slope of the characteristic curve of the
pressure transmitter.
Using a lower and an upper trim point, you can determine the course of the characteristic
curve.
Change the slope of the characteristic to a minimum of 0.9 and a maximum of 1.1. Any
larger variation from a slope of 1.0 will prevent the respective trim point from being stored.
The lower trim point must be far enough from the upper trim point so that the smallest
calibration span is included.
The smallest calibration span is displayed in the sensor calibration dialog and depends on
the measurement range. If the calibration is smaller than the smallest span, the following
status code accompanies the measured value:
"Bad, configuration error"
In this case, recalibration the lower or the upper sensor trim point with a sufficiently large
calibration span.
SITRANS P DS III/P410 with PROFIBUS PA
Operating Instructions, 02/2016, A5E00053276-08
Operator control functions via PROFIBUS
7.11 Calibrating the sensor
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